CN221117894U - Thread cutting and presser foot lifting mechanism of sewing machine and sewing machine - Google Patents
Thread cutting and presser foot lifting mechanism of sewing machine and sewing machine Download PDFInfo
- Publication number
- CN221117894U CN221117894U CN202322659637.9U CN202322659637U CN221117894U CN 221117894 U CN221117894 U CN 221117894U CN 202322659637 U CN202322659637 U CN 202322659637U CN 221117894 U CN221117894 U CN 221117894U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- presser foot
- foot lifting
- wire cutting
- sewing machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000009958 sewing Methods 0.000 title claims abstract description 30
- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 238000005452 bending Methods 0.000 claims description 13
- 238000009966 trimming Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
The utility model relates to the technical field of sewing machines, and discloses a thread cutting and presser foot lifting mechanism of a sewing machine, which comprises a driving motor, a cam crank, a thread cutting connecting rod and a thread cutting assembly, wherein the cam crank is arranged on a driving shaft of the driving motor, and swings to drive the thread cutting connecting rod to move up and down so as to drive the thread cutting assembly to realize thread cutting action. The cam crank is driven to swing through the rotation of the driving motor, the cam crank swings to drive the wire cutting connecting rod to lift so as to drive the wire cutting assembly to realize the wire cutting action, the wire cutting connecting rod moves on the wire cutting shaft fixing seat through the waist-shaped hole matched guide assembly, the driving structure is simplified, the motor load is small, the wire cutting force is light and flexible, the processing cost is reduced, and the installation is convenient.
Description
Technical Field
The utility model relates to the technical field of sewing machines, in particular to a thread cutting and presser foot lifting mechanism of a sewing machine and the sewing machine.
Background
A sewing machine is a machine that interweaves or sews one or more layers of stitching material by forming one or more stitches on the stitching material with one or more stitching threads. In the prior art, the thread cutting driving mechanism and the presser foot lifting mechanism are usually two mutually independent mechanisms and are driven by different electromagnets. The electromagnet is used for driving the presser foot to lift, the height of the presser foot is not adjustable, and the noise is relatively large; the disadvantage of lifting the presser foot against the knee by the person's knee is that a great force is required to lift the presser foot, and the operation of the sewing machine in the sewing plant is often a female, which is laborious in practice. The electromagnet drives the wire to be cut, so that the wire cutting device has the advantages of high noise, unstable wire cutting effect, large vibration and easiness in clamping of the scissors.
The application number CN202210604199.3 discloses a presser foot lifting and thread trimming device and a sewing machine, and the presser foot lifting and thread trimming transmission mechanism is complex in structure, high in processing cost, inconvenient to install, large in motor load and low in transmission efficiency.
Disclosure of utility model
The utility model provides a thread cutting and presser foot lifting mechanism of a sewing machine and the sewing machine aiming at the defects in the prior art.
In order to solve the technical problems, the utility model is solved by the following technical scheme:
The utility model provides a sewing machine cut line, lift presser foot mechanism, includes driving motor, cam crank, cuts the line connecting rod and cuts the line subassembly, and cam crank installs in the driving motor drive axle, and cam crank swing drives and cuts the line connecting rod and reciprocate and then drive and cut the line subassembly and realize cutting the line action, still includes and cuts the spool fixing base, cuts and installs guide assembly on the spool fixing base, cuts and has offered waist hole on the line connecting rod, guide assembly and waist hole cooperation to cutting the line connecting rod direction.
Preferably, the spool fixing seat comprises a first fixing seat and a second fixing seat which are fixed on the shell, the guide assembly comprises a spool connecting rod shaft, a first check ring and a second check ring, one end of the spool connecting rod shaft penetrates through the waist-shaped hole to be connected with the first check ring, and the other end of the spool connecting rod shaft penetrates through the first fixing seat and the second fixing seat to be connected with the second check ring.
Preferably, the guide assembly further comprises a third check ring, the third check ring is arranged between the waist-shaped hole and the first fixing seat on the wire cutting connecting rod shaft, and the wire cutting connecting rod shaft is limited between the first check ring and the third check ring.
Preferably, the presser foot lifting device further comprises a presser foot lifting assembly and a presser foot lifting lever hinged on the machine shell, wherein the presser foot lifting assembly comprises a pull rod, the end part of the pull rod is hinged with the lower end of the presser foot lifting lever, and the other end of the presser foot lifting lever extends to the upper part of the cam crank and is matched with the cam crank.
Preferably, the cam crank is provided with balls which are respectively contacted with the presser foot lifting lever and the trimming connecting rod, and when the cam crank swings upwards, the balls are contacted with the presser foot lifting lever and drive the presser foot lifting lever to swing; when the cam crank swings downwards, the ball contacts with the wire cutting connecting rod and drives the wire cutting connecting rod to lift.
Preferably, the top of the wire cutting connecting rod is provided with a bending plate and a pressing plate, the bending plate is positioned above the pressing plate, the cam crank is also provided with a limiting piece for limiting the bending plate, and when the wire cutting connecting rod descends, the limiting piece is contacted with the bending plate, and the cam crank drives the balls to be contacted with the pressing plate.
Preferably, the wire cutting connecting rod is also provided with a wire rope fixing seat, the bottom of the wire cutting connecting rod is hinged with a wire cutting crank, and the wire cutting crank is connected with the wire cutting assembly.
A sewing machine comprises a thread cutting and presser foot lifting mechanism of the sewing machine.
The utility model has the remarkable technical effects due to the adoption of the technical scheme: the cam crank is driven to swing through the rotation of the driving motor, the cam crank swings to drive the wire cutting connecting rod to lift so as to drive the wire cutting assembly to realize the wire cutting action, the wire cutting connecting rod moves on the wire cutting shaft fixing seat through the waist-shaped hole matched guide assembly, the driving structure is simplified, the motor load is small, the wire cutting force is light and flexible, the processing cost is reduced, and the installation is convenient.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is an exploded view of the present utility model.
Fig. 3 is a schematic plan view of the present utility model.
The cam crank of fig. 4 is schematically structured.
The names of the parts indicated by the numerical reference numerals in the above drawings are as follows: the device comprises a 1-driving motor, a 2-cam crank, a 3-wire cutting connecting rod, a 301-waist-shaped hole, a 302-bent plate, a 303-pressing plate, a 4-wire cutting shaft fixing seat, a 401-first fixing seat, a 402-second fixing seat, a 5-guiding component, a 501-wire cutting connecting rod shaft, a 502-first check ring, a 503-second check ring, a 504-third check ring, a 6-ball, a 7-presser foot lifting lever, an 8-limiting piece, a 9-wire rope fixing seat, a 10-wire cutting crank, a 11-presser foot lifting component, a 12-pull rod, a 13-wire cutting component and a 15-swing screw.
Detailed Description
The utility model is described in further detail below with reference to figures 1-4 and examples.
Example 1
The utility model provides a sewing machine cut line, lift presser foot mechanism, including driving motor 1, cam crank 2, cut line connecting rod 3 and cut line subassembly 13, cam crank 2 installs in driving motor 1 drive shaft, and cam crank 2 swings and drives cut line connecting rod 3 and reciprocate and then drive cut line subassembly 13 and realize cutting the line action, still includes cuts spool fixing base 4, installs guide assembly 5 on the spool fixing base 4, has seted up waist hole 301 on cutting the line connecting rod 3, and guide assembly 5 cooperates the direction to cut line connecting rod 3 with waist hole 301.
The shearing shaft fixing seat 4 comprises a first fixing seat 401 and a second fixing seat 402 which are fixed on the shell, the guide assembly 5 comprises a shearing connecting rod shaft 501, a first check ring 502 and a second check ring 503, one end of the shearing connecting rod shaft 501 passes through the waist-shaped hole 301 to be connected with the first check ring 502, and the other end of the shearing connecting rod shaft 501 passes through the first fixing seat 401 and the second fixing seat 402 to be connected with the second check ring 503. There are only 2 collars on the scissor wire link shaft 501.
The presser foot lifting device further comprises a presser foot lifting assembly 11 and a presser foot lifting lever 7 hinged on the machine shell, the presser foot lifting lever 7 is a bent plate, one side is short and the other side is long, the presser foot lifting assembly 11 comprises a pull rod 12, the end part of the pull rod 12 is hinged with the lower end of the presser foot lifting lever 7, and the other end of the presser foot lifting lever 7 extends to the upper side of the cam crank 2 and is matched with the cam crank 2. The presser foot lifting lever 7 is hinged on the machine shell through a swing screw 15, and the end part of the pull rod 12 is hinged with the lower end of the presser foot lifting lever 7 through the swing screw 15.
The cam crank 2 is provided with a ball 6, the ball 6 can rotate and is movable, the ball 6 is respectively contacted with the presser foot lifting lever 7 and the thread cutting connecting rod 3, and when the cam crank 2 swings upwards, the ball 6 is contacted with the presser foot lifting lever 7 and drives the presser foot lifting lever 7 to swing; when the cam crank 2 swings downward, the balls 6 contact with the wire cutting link 3 and drive the wire cutting link to lift.
The top of the wire cutting connecting rod 3 is provided with a bending plate 302 and a pressing plate 303, the bending plate 302 is positioned above the pressing plate 303, the cam crank 2 is also provided with a limiting piece 8 for limiting the bending plate 302, when the wire cutting connecting rod 3 descends, the limiting piece 8 is in contact with the bending plate 302, and the cam crank 2 drives the ball 6 to be in contact with the pressing plate 303.
The wire cutting connecting rod 3 is also provided with a wire rope fixing seat 9, the bottom of the wire cutting connecting rod 3 is hinged with a wire cutting crank 10, and the wire cutting crank 10 is connected with a wire cutting assembly 13. The bottom of the thread cutting connecting rod 3 is hinged with the thread cutting crank 10 through a swinging screw 15.
Working principle: the driving motor 1 rotates to drive the cam crank 2 to swing, the cam crank 2 drives the ball 6 to swing, when the cam crank 2 swings downwards, the ball 6 contacts with the wire cutting connecting rod 3 and drives the wire cutting assembly 13 to lift, and when the wire cutting connecting rod 3 descends, the limiting piece 8 contacts with the bending plate 302, and the cam crank 2 drives the ball 6 to contact with the pressing plate 303; the wire cutting connecting rod 3 moves on the wire cutting shaft fixing seat 4 through the waist-shaped hole 301 matched with the guide component 5; when the cam crank 2 swings upwards, the ball 6 contacts with the presser foot lifting lever 7 and drives the presser foot lifting lever to swing, and the pull rod 12 of the presser foot lifting assembly 11 is pulled to realize the presser foot lifting action.
Example 2
Example 2 differs from example 1 in that: the guiding assembly 5 further comprises a third check ring 504, the third check ring 504 is arranged between the waist-shaped hole 301 and the first fixing seat 401 on the line cutting connecting rod shaft 501, and the line cutting connecting rod shaft 501 is limited between the first check ring 502 and the third check ring 504. The shear link shaft 501 has 3 collars.
Example 3
Example 3 differs from example 1 in that: the balls 6 are not rotatable and are fixed.
Example 4
A sewing machine comprises a thread cutting and presser foot lifting mechanism of the sewing machine.
Claims (8)
1. The utility model provides a sewing machine cut line, lift presser foot mechanism, includes driving motor (1), cam crank (2), cuts line connecting rod (3) and cuts line subassembly (13), and cam crank (2) are installed in driving motor (1) drive axle, and cam crank (2) swing drives and cuts line connecting rod (3) reciprocate and then drive and cut line subassembly (13) and realize cutting the line action, its characterized in that: the wire cutting device further comprises a wire cutting shaft fixing seat (4), a guide assembly (5) is arranged on the wire cutting shaft fixing seat (4), a waist-shaped hole (301) is formed in the wire cutting connecting rod (3), and the guide assembly (5) is matched with the waist-shaped hole (301) to guide the wire cutting connecting rod (3).
2. The thread trimming and presser foot lifting mechanism of a sewing machine of claim 1, wherein: the spool fixing seat (4) comprises a first fixing seat (401) and a second fixing seat (402) which are fixed on the shell, the guide assembly (5) comprises a spool connecting rod shaft (501), a first check ring (502) and a second check ring (503), one end of the spool connecting rod shaft (501) penetrates through the waist-shaped hole (301) to be connected with the first check ring (502), and the other end of the spool connecting rod shaft (501) penetrates through the first fixing seat (401) and the second fixing seat (402) to be connected with the second check ring (503).
3. The thread trimming and presser foot lifting mechanism of a sewing machine of claim 2, wherein: the guide assembly (5) further comprises a third check ring (504), the third check ring (504) is arranged between the waist-shaped hole (301) and the first fixing seat (401) on the line cutting connecting rod shaft (501), and the line cutting connecting rod shaft (501) is limited between the first check ring (502) and the third check ring (504).
4. The thread trimming and presser foot lifting mechanism of a sewing machine of claim 1, wherein: the presser foot lifting device is characterized by further comprising a presser foot lifting assembly (11) and a presser foot lifting lever (7) hinged to the machine shell, wherein the presser foot lifting assembly (11) comprises a pull rod (12), the end part of the pull rod (12) is hinged to the lower end of the presser foot lifting lever (7), and the other end of the presser foot lifting lever (7) extends to the upper part of the cam crank (2) and is matched with the cam crank.
5. The thread trimming and presser foot lifting mechanism of a sewing machine of claim 4, wherein: the cam crank (2) is provided with a ball (6), the ball (6) is respectively contacted with the presser foot lifting lever (7) and the thread cutting connecting rod (3), and when the cam crank (2) swings upwards, the ball (6) is contacted with the presser foot lifting lever (7) and drives the presser foot lifting lever to swing; when the cam crank (2) swings downwards, the ball (6) contacts with the wire cutting connecting rod (3) and drives the wire cutting connecting rod to lift.
6. The thread trimming and presser foot lifting mechanism of a sewing machine of claim 5, wherein: the top of the wire cutting connecting rod (3) is provided with a bending plate (302) and a pressing plate (303), the bending plate (302) is located above the pressing plate (303), the cam crank (2) is further provided with a limiting piece (8) used for limiting the bending plate (302), when the wire cutting connecting rod (3) descends, the limiting piece (8) is in contact with the bending plate (302), and the cam crank (2) drives the ball (6) to be in contact with the pressing plate (303).
7. The thread trimming and presser foot lifting mechanism of a sewing machine of claim 1, wherein: the wire cutting connecting rod (3) is also provided with a steel wire rope fixing seat (9), the bottom of the wire cutting connecting rod (3) is hinged with a wire cutting crank (10), and the wire cutting crank (10) is connected with a wire cutting assembly (13).
8. A sewing machine, characterized in that: a thread cutting and presser foot lifting mechanism comprising the sewing machine of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322659637.9U CN221117894U (en) | 2023-09-28 | 2023-09-28 | Thread cutting and presser foot lifting mechanism of sewing machine and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322659637.9U CN221117894U (en) | 2023-09-28 | 2023-09-28 | Thread cutting and presser foot lifting mechanism of sewing machine and sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221117894U true CN221117894U (en) | 2024-06-11 |
Family
ID=91374241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322659637.9U Active CN221117894U (en) | 2023-09-28 | 2023-09-28 | Thread cutting and presser foot lifting mechanism of sewing machine and sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221117894U (en) |
-
2023
- 2023-09-28 CN CN202322659637.9U patent/CN221117894U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104099726B (en) | Driving mechanism for routing, lifting presser foot and trimming and buttonhole sewing machine | |
| CN221117894U (en) | Thread cutting and presser foot lifting mechanism of sewing machine and sewing machine | |
| CN104088096B (en) | Driving device for routing, lifting presser foot and trimming and flat buttonhole sewing machine | |
| CN203960525U (en) | The driving mechanism that a kind of routing and presser foot lifter trimming are used and a kind of lockstitch button holder | |
| CN208183275U (en) | A kind of sewing machine | |
| CN203960543U (en) | Routing and presser foot lifter wire shearing driving device and straight buttonholing machine | |
| CN210796864U (en) | Thread trimming and presser foot lifting mechanism of sewing machine | |
| CN201136964Y (en) | Slabbing blade device of embroidery machine for thick cloth | |
| CN214088916U (en) | Button sewing machine and lift presser foot mechanism thereof | |
| CN215517950U (en) | Feeding and thread trimming mechanism of sewing machine and sewing machine with novel base structure | |
| CN212655961U (en) | Novel thread feeding needle device | |
| CN112048846A (en) | Motor-driven lifting and pressing wire shearing mechanism of button sewing machine | |
| CN216919667U (en) | Driving mechanism of sewing machine | |
| CN214529592U (en) | Presser foot pressure control structure | |
| CN213804256U (en) | Quilting combination body | |
| CN213739962U (en) | Rear tug mechanism for automatic lifting of sewing machine | |
| CN210916566U (en) | Novel presser foot mechanism is lifted to flush joint machine tangent line | |
| CN220789053U (en) | Thread cutting structure of button sewing machine | |
| CN216040168U (en) | Thread trimming and presser foot lifting driving mechanism in flat seaming machine | |
| CN115125679B (en) | Automatic chain sewing machine of cutting line | |
| CN216663440U (en) | Automatic lift presser foot structure | |
| CN215404895U (en) | Driving mechanism of lockstitch sewing machine | |
| CN213835843U (en) | Needle bar guide type presser foot driving mechanism | |
| CN216193269U (en) | Single motor controlled multifunctional sewing machine | |
| CN220812905U (en) | Secondary lifting mechanism of rope embroidery device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |